/usr/share/ada/adainclude/gnatcoll/gnatcoll-scripts-utils.adb is in libgnatcoll1.6-dev 1.6gpl2014-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- G N A T C O L L --
-- --
-- Copyright (C) 2003-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Unchecked_Deallocation;
with GNAT.Strings; use GNAT.Strings;
package body GNATCOLL.Scripts.Utils is
------------------------------------
-- Argument_List_To_Quoted_String --
------------------------------------
function Argument_List_To_Quoted_String
(Args : GNAT.Strings.String_List;
Quote : Character := '"';
Quote_Backslash : Boolean := True) return String
is
Len : Natural := 1;
begin
-- Compute the maximum length of the output
for J in Args'Range loop
-- For each argument we append at most 3 characters, two quotes
-- plus an ending space.
if Args (J) /= null then
Len := Len + Args (J)'Length + 3;
for T in Args (J)'Range loop
if Args (J)(T) = Quote or else Args (J)(T) = '\' then
Len := Len + 1;
end if;
end loop;
end if;
end loop;
declare
Result : String (1 .. Len + 1);
Ind : Natural := Result'First;
procedure Append (Str : String);
-- Append the contents of Str to Result, protecting quote characters
------------
-- Append --
------------
procedure Append (Str : String) is
begin
for J in Str'Range loop
if Str (J) = Quote
or else (Quote_Backslash and then Str (J) = '\')
then
Result (Ind) := '\';
Result (Ind + 1) := Str (J);
Ind := Ind + 2;
else
Result (Ind) := Str (J);
Ind := Ind + 1;
end if;
end loop;
end Append;
begin
for J in Args'Range loop
if Args (J) /= null then
if Index (Args (J).all, " ") > 0 then
Result (Ind) := Quote;
Ind := Ind + 1;
Append (Args (J).all);
Result (Ind) := Quote;
Result (Ind + 1) := ' ';
Ind := Ind + 2;
else
Append (Args (J).all);
Result (Ind) := ' ';
Ind := Ind + 1;
end if;
end if;
end loop;
return Result (1 .. Ind - 1);
end;
end Argument_List_To_Quoted_String;
-------------------------------
-- Argument_To_Quoted_String --
-------------------------------
function Argument_To_Quoted_String
(Arg : String;
Quote : Character := '"';
Quote_Backslash : Boolean := True) return String
is
A : aliased String := Arg;
L : constant String_List (1 .. 1) := (1 => A'Unchecked_Access);
begin
return Argument_List_To_Quoted_String (L, Quote, Quote_Backslash);
end Argument_To_Quoted_String;
------------------------------------------------
-- Argument_String_To_List_With_Triple_Quotes --
------------------------------------------------
function Argument_String_To_List_With_Triple_Quotes
(Arg_String : String) return String_List_Access
is
Max_Args : Integer := 128;
New_Argv : String_List_Access := new String_List (1 .. Max_Args);
New_Argc : Natural := 0;
Idx : Integer;
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(String_List, String_List_Access);
Backslashed : Boolean;
Quoted : Boolean;
Triple_Quoted : Boolean;
Has_Triple : Boolean;
Start_Idx : Integer;
Start_With_Triple : Boolean;
End_With_Triple : Boolean;
begin
Idx := Arg_String'First;
loop
exit when Idx > Arg_String'Last;
Backslashed := False;
Quoted := False;
Triple_Quoted := False;
Start_Idx := Idx;
Start_With_Triple := False;
End_With_Triple := False;
while Idx <= Arg_String'Last
and then (Backslashed
or else Quoted
or else Triple_Quoted
or else Arg_String (Idx) /= ' ')
loop
End_With_Triple := False;
if Backslashed then
Backslashed := False;
else
case Arg_String (Idx) is
when '\' =>
Backslashed := True;
when '"' =>
if Quoted then
Quoted := False;
else
Has_Triple := Idx + 2 <= Arg_String'Last
and then Arg_String (Idx) = '"'
and then Arg_String (Idx + 1) = '"'
and then Arg_String (Idx + 2) = '"';
if Has_Triple then
Triple_Quoted := not Triple_Quoted;
if Idx = Start_Idx then
Start_With_Triple := Triple_Quoted;
end if;
End_With_Triple := True;
Idx := Idx + 2;
else
Quoted := True;
end if;
end if;
when others =>
null;
end case;
end if;
Idx := Idx + 1;
end loop;
New_Argc := New_Argc + 1;
-- Resize the table if needed
if New_Argc > Max_Args then
declare
New_New_Argv : String_List (1 .. Max_Args * 2);
begin
New_New_Argv (1 .. Max_Args) := New_Argv.all;
Unchecked_Free (New_Argv);
New_Argv := new String_List'(New_New_Argv);
end;
Max_Args := Max_Args * 2;
end if;
if Start_With_Triple and End_With_Triple then
New_Argv (New_Argc) :=
new String'(Arg_String (Start_Idx + 3 .. Idx - 4));
else
New_Argv (New_Argc) :=
new String'(Arg_String (Start_Idx .. Idx - 1));
end if;
-- Skip extraneous spaces
while Idx <= Arg_String'Last and then Arg_String (Idx) = ' ' loop
Idx := Idx + 1;
end loop;
end loop;
declare
Result : constant String_List := New_Argv (1 .. New_Argc);
begin
Unchecked_Free (New_Argv);
return new String_List'(Result);
end;
end Argument_String_To_List_With_Triple_Quotes;
---------------
-- Unprotect --
---------------
function Unprotect (Str : String) return String is
Result : String (Str'Range);
Index : Natural := Result'First;
N : Natural := Str'First;
begin
while N <= Str'Last loop
if Str (N) = '\' then
if N < Str'Last then
Result (Index) := Str (N + 1);
end if;
N := N + 2;
else
Result (Index) := Str (N);
N := N + 1;
end if;
Index := Index + 1;
end loop;
if Result'Length > 1
and then Result (Result'First) = '"'
and then Result (Index - 1) = '"'
then
return Result (Result'First + 1 .. Index - 2);
else
return Result (Result'First .. Index - 1);
end if;
end Unprotect;
end GNATCOLL.Scripts.Utils;
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